pycodestyle fix

Author: mamoll

pygccxml/declarations/type_traits.py

@@ -513,7 +513,7 @@ def is_std_string(type_):
     type_ = remove_alias(type_)
     type_ = remove_reference(type_)
     type_ = remove_cv(type_)
-    return type_.decl_string.replace(' ','') in string_equivalences
+    return type_.decl_string.replace(' ', '') in string_equivalences
 
 
 def is_std_wstring(type_):
@@ -528,7 +528,7 @@ def is_std_wstring(type_):
     type_ = remove_alias(type_)
     type_ = remove_reference(type_)
     type_ = remove_cv(type_)
-    return type_.decl_string.replace(' ','') in wstring_equivalences
+    return type_.decl_string.replace(' ', '') in wstring_equivalences
 
 
 def is_std_ostream(type_):
@@ -543,7 +543,7 @@ def is_std_ostream(type_):
     type_ = remove_alias(type_)
     type_ = remove_reference(type_)
     type_ = remove_cv(type_)
-    return type_.decl_string.replace(' ','') in ostream_equivalences
+    return type_.decl_string.replace(' ', '') in ostream_equivalences
 
 
 def is_std_wostream(type_):
@@ -558,4 +558,4 @@ def is_std_wostream(type_):
     type_ = remove_alias(type_)
     type_ = remove_reference(type_)
     type_ = remove_cv(type_)
-    return type_.decl_string.replace(' ','') in wostream_equivalences
+    return type_.decl_string.replace(' ', '') in wostream_equivalences